Evaluation of Tenofovir Disoproxil Fumarate in Adolescents With Chronic Hepatitis B Infection

Completed · Phase 3 · Has a placebo group

Conditions studied: Hepatitis B Virus (HBV)

In brief

The primary purpose of the study is to evaluate the effectiveness, safety, and tolerability of tenofovir disoproxil fumarate (TDF) in adolescents (aged 12-17 years) with chronic hepatitis B virus (HBV) infection. The optimal treatment for adolescents with chronic HBV infection is currently unknown. Treatment with interferon alfa, lamivudine, and adefovir dipivoxil in pediatric populations has been shown to be less than optimal. Further, the safety and efficacy of entecavir and telbivudine have not been established in patients \< 16 years of age. A study evaluating TDF in adolescents (ages 12-17) was needed to assess the safety and efficacy of this agent in the treatment of chronic hepatitis B in this patient population. In addition, the study will help to further elucidate the pharmacokinetic (PK) and resistance profiles of TDF. Through their participation, study participants will help generate critical new information to help guide the most optimal treatment of chronic HBV infection in adolescents. This is a randomized, double-blind study to evaluate the antiviral efficacy, safety, and tolerability of TDF versus placebo in adolescents with chronic HBV infection. TDF treatment-naive participants were randomized in a 1:1 ratio to TDF or placebo. After 72 weeks of blinded treatment, participants were to switch to open-label TDF for an additional 2.5 years of treatment, provided that no safety concerns are identified by the Independent Data Monitoring Committee monitoring the study.

Key facts

Study ID

NCT00734162

Run by

Gilead Sciences

People needed

106

Starts

2008-12-01

Expected to finish

2015-12-01

Last updated by the study team

2016-09-01

Who can join

Age: 12 and older, up to 17. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Male or female, 12 through 17 years of age, inclusive (consent of parent/legal guardian required)
• Documented chronic HBV infection
• HBeAg positive or HBeAg negative
• Weight > 35 kg
• Able to swallow oral tablets
• HBV DNA > 100,000 copies/mL (polymerase chain reaction (PCR) method)
• Alanine aminotransferase (ALT) > 2 × upper limit of normal (ULN) at screening, OR any history of ALT > 2 × ULN over the past 24 months
• Willing and able to provide written informed consent/assent (child and parent/legal guardian)
• Negative serum pregnancy test (for postmenarchal females only)
• Estimated glomerular filtration rate (creatinine clearance [using the Schwartz formula]) > 80 mL/min/1.73m\^2
• Adequate hematologic function (absolute neutrophil count ≥ 1,500/mm\^3; hemoglobin ≥ 10.0 g/dL)
• No prior TDF therapy (participants may have received prior interferon or oral anti-HBV nucleoside/nucleotide therapy; participants must have discontinued interferon therapy ≥ 6 months prior to screening; participants experienced on anti-HBV nucleoside/nucleotide therapy must have discontinued therapy ≥ 16 weeks prior to screening to avoid flare if randomized to the placebo arm)

You may not qualify if…

• Pregnant women, women who are breast feeding or who believe they may wish to become pregnant during the course of the study
• Males and females of reproductive potential who are not willing to use an effective method of contraception during the study
• Decompensated liver disease
• Receipt of interferon (pegylated or not) therapy within 6 months of the Screening Visit
• Receipt of anti-HBV nucleoside/nucleotide therapy within 16 weeks of the Screening Visit
• Alpha fetoprotein > 50 ng/mL
• Evidence of hepatocellular carcinoma (HCC)
• Coinfection with HIV, hepatitis C virus (HCV), or hepatitis D virus (HDV)
• History of significant renal disease (eg, nephrotic syndrome, renal dysgenesis, polycystic kidney disease, congenital nephrosis, acute tubular necrosis, other renal disease)
• History of significant bone disease (eg, osteomalacia, chronic osteomyelitis, osteogenesis imperfecta, osteochondroses, multiple bone fractures)
• Significant cardiovascular, pulmonary, or neurological disease
• Evidence of a gastrointestinal malabsorption syndrome that may interfere with absorption of orally administered medications
• History of solid organ or bone marrow transplantation
• Ongoing therapy with nephrotoxic agents, competitors of renal excretion, systemic chemotherapeutic agents, systemic corticosteroids, interleukin-2 (IL-2), or other immunomodulating or investigational agents
• Known hypersensitivity to the study drugs, the metabolites or formulation excipients
• Any other condition (including alcohol or substance abuse) or prior therapy that, in the opinion of the Investigator, would make the participants unsuitable for the study or unable to comply with dosing requirements

Where it is running

• Children's Hospital & Research Center at Oakland — Oakland, California, United States
• Riley Hospital for Children — Indianapolis, Indiana, United States
• Children's Hospital & Regional Medical Center, d/b/a Seattle Children's Research Institute — Seattle, Washington, United States
• Multiprofile Hospital for Active Treatment Sveti Georgi — Plovdiv, Bulgaria
• Clinic of Gastroenterology, Specialized Hospital for Active Treatment of Pediatric Diseases, Sofia — Sofia, Bulgaria
• Hopital Femmes Meres Enfants — Bron, France
• Hôpital Claude Huriez — Lille, France
• Samodzielny Publiczny Dzieciecy Szpital Kliniczny Akademii Medycznej w Bialymstoku — Bialystok, Poland
• Wojewodzki Specjalistyczny Szpital im Bieganskiego — Bydgoszcz, Poland
• Wojewodzki Szpital Obserwacyjno-Zakazny im. T. Browicza — Bydgoszcz, Poland
• Krakowski Szpital Specjalistyczny im. Jana Pawla II — Krakow, Poland
• Samodzielny Publiczny Szpital Kliniczny im. Karola Johschera — Poznan, Poland
• Specjalistyczny Zespol Opieki Zdrowotnej nad Matka i Dzieckiem — Poznan, Poland
• Wojewodzki Szpital Zakazny — Warsaw, Poland
• Samodzielny Publiczny Szpital Kliniczny Nr 1 — Wroclaw, Poland
• Fundeni Clinical Institute — Bucharest, Romania
• Institute for Infectious Diseases — Bucharest, Romania
• Cluj Childrens Emergency Hospital — Napaco, Romania
• Hosp Univ y Politecnico La Fe de Valencia — Madrid, Spain
• Hospital Universitario De Getafe — Madrid, Spain
• Ege Universitesi Tip Fakultesi Hastanesi — Izmir, Turkey (Türkiye)

Full record on ClinicalTrials.gov

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